.... On the anodes (AlZnIn), the corrosion rate increases as a function of transfer current density (0–80 A/m 2 ). However, the correlation is less prominent at higher frequencies (100–200 Hz). For the freely corroding super duplex, the correlation is similar to that on the anodes for the highest current density...

... that the corrosion rate is independent of transfer current density (0- 400 A/m2) and power frequency (0-200 Hz) on steel. On the anodes, the corrosion rate increases as a function of transfer current density (0- 80 A/m2) at 50 Hz. However, the correlation is less prominent at higher frequencies (100-200 Hz). KEY...

... deh grit pipeline anode specimen carbon steel power frequency circumference fluid dynamics Next Generation Heating of Subsea Oil Production Pipelines Jens Kristian Lervik1, Øyvind Iversen2, Kristian Thinn Solheim1 1SINTEF Energy Research Trondheim, Norway 2Nexans Norway AS, Oslo, Norway...

... aluminum specimen anode steel ac corrosion subsurface corrosion upstream oil & gas current density steel specimen electrically heated pipeline specimen materials and corrosion frequency riser corrosion evolution pipeline steel gas evolution AC Corrosion of Electrically Heated...

... Abstract Laboratory studies have shown that electroosmosis with the suitable operation process strengthens soft clay from the anode to the cathode. A field test was carried out to verify the suitable operation process. The results indicate that the average cone resistance and undrained shear...

... as power source for unmanned underwater vehicles. Here TiO2-based nanostructured materials, i.e. C:TiO2 TiOF2 composite and ZrO2-doped TiO2 microtubes were synthesized for Li-ion battery anodes by original techniques. C:TiO2 TiOF2 shows stability: 205 mAh g 1 during the 20th cycle. Twentyfold cycling shows...

... superhydrophobic surface anode substrate Research on the Optimal Process Parameters of Preparing Super-hydrophobic Surface by Ni-nSiO2 Nano-composite Electro-deposition Ji Wang, Changyi Chen, Rui Li, Wenxuan Jiang, Xin Yu School of Naval Architecture, Dalian University of Technology, Dalian, Liaoning, China...

... corrosion recommendation riser corrosion coating system renewable energy cathodic protection materials and corrosion wind turbine surface preparation requirement offshore wind farm protection system anode flowline corrosion corrosion allowance subsurface corrosion splash zone protection...

... cementation cathode soil improvement anode liquid limit strength drilling fluids and materials electrical gradient cacl 2 undrained shear strength electrode electrochemical stabilization injection configuration Electrochemical Stabilization of Offshore and Onshore Soils: A Review Joon Kyu Lee...

... ABSTRACT Previous studies have shown that injection of chemical solutions through the anode during electro-osmosis is effective in strengthening soft clay. However, the region of improvement is mostly limited to the anode or cathode region. The objective of this study is to expand region...

... of current being transferred to seawater and length of the CTZs (current transfer zones) at the heated pipeline ends. It is therefore expected that increased frequency reduces the amount of anodes needed for ac current transfer and ac corrosion protection. A first approach to the use of higher frequency...

...Nord Stream Project - Baltic Sea Environment: Hydrogen Damage Assessment for Line Pipe Steel and Anode Material Selection Manuela Gentile Marco Cattalini Saipem S.p.a. Saipem S.p.a. Fano (PU), Italy S. Donato Milanese (MI), Italy Mauro Fehervari Luca Tomaselli Saipem S.p.a. Saipem S.p.a. Fano (PU...

... pressure kpa ek cell test anode water ph reservoir Electrokinetic (EK) Dewatering of Orr Dam Sediment Julie Q. Shang Department of Civil and Environmental Engineering, University of Western Ontario London, Ontario, Canada Roman Elazar Department of Civil and Environmental Engineering, University...

... ABSTRACT: Cathodic protection retrofit of a gravity based structure located in arctic waters was completed using a uniquely designed (one of a kind) impressed current cathodic protection system consisting of semiremote anode sleds. The cathodic protection design presented matchless challenges...

.... To meet the new challenges, studies have been carried out to improve the DEH method. The proposed DEH designs have several advantages compared to the traditional DEH method, i.e. reduced power cable dimensions, simplified electrical connections to the pipelines, reduced number of anodes, reduced...

... ABSTRACT Since year 2000 a number of offshore projects have utilized Direct Electrical Heating (DEH) for control of hydrate/wax formation in subsea flowlines. In an "open" DEH system, anodes are required for grounding of the DEH system to seawater, as well as for cathodic protection (CP...

... ABSTRACT Using FEM during the design of cathodic protection system can optimize the cathodic protection system and forecast the distribution of potential in real marine environment. A single bar was modeled for which protection was provided by an anode located in different places. Through...

... be either an impressed current type or by galvanic (or sacrificial) anodes. This paper will present a review of offshore vessel and fixed structure CP design, contrasting the effectiveness of impressed current and sacrificial anode designs for the hull. INTRODUCTION The use of floating production systems...

... achieved a high energy lithium-ion battery cell which energy density is about 300 Wh/liter by the addition of nickel compound into its cathode. To enhance this performance we now try to modify its anode material and configuration. KEY WORDS: Lithium ion battery; underwater vehicle; pressure balanced...

.... As the pipeline is an active conductor in the heating system a special anode design is required, both to ensure sufficient grounding for the heating system and for corrosion protection regarding ac (alternating current). The design of the anode system is strongly related to time of use. This is one of the main...